Finally getting this together. I had a few misconceptions about the basic wav trigger functionality so I might end up redesigning the face plate a bit.
After reading the documentation a bit more - is there no way to power with 5v? I would swear it said somewhere that you could use usb…
Per the hookup guide, its 6c-15v
https://learn.sparkfun.com/tutorials/wav-trigger-hookup-guide-v11
http://robertsonics.com/wav-trigger-online-user-guide/
User guide has this to say:
I must have gotten the regulated power out mixed up. Well, on the plus side now I have +5 volt outputs on my routemaster if I need it!
How would one go about adding a push button to trigger in addition to jack socket input? I have space at the bottom of the panel so I think I might make the bottom four jacks have buttons as well.
Since the jacks take in gates as inputs, you could prolly just get away with putting a button thats fed power from the 5v regulated power.
If memory serves, Sam has these big buttons for gate inputs that goes to either a wav trigger or something similar. not 100% on how that setup is configured though.
Im more of a midi guy than cv when i can help it.
Add a diode, just to avoid feeding that 5V back thru an eventual patch cable to the output of another module.
Could you do a rough schematic for it? I would be much obliged!
Awesome. Is this a good thing to have on pretty much every jack anyway?
Thanks @eric I always forget about circuit protection stuff. The original build has LEDs, i wonder if you could bank off those. Probably best to use purpose-built diodes though.
I would prefer more protection than less. Frankly at this point I’m shocked I haven’t destroyed more things.
Only those where you can “send voltage back” to the jack, like here with the push-button.
And only for trigger/gate, not for CV because of the voltage-drop across the diode.
If there’s no voltage on the jack and the push button is open, then the trigger will be floating. You probably should add a pulldown resistor unless there’s one already in the circuit.
Sorry surely allways said but the pull down R, before (jack side) or after the diode ? thx
To the right of the diode. The point is that when the jack input voltage is zero (or < ~700 mV) the diode is not in conduction so it’s like another open switch. Then the trigger is connected to nothing. Add a pulldown resistor to the right of the diode so the trigger will be connected via the resistor to ground.
I dont know if @nervous_squirrel has been on this page! but he has had some interessting findings with the wav trigger, including pitch control over the sysex too. I think there is a picture of his project on his instagram but im not sure if he has done a write up about what he did
Hi Sam! Yes, pitch and volume and other stuff on the WAV trigger can be controlled via serial from an arduino, and of course you can have CV inputs into the arduino. Trigger inputs to change banks of sounds and turn polyphony and looping on and off etc. I haven’t documented that module yet though.
And naturally, I must now set my current project on fire.
(( I am joking!! ))
Seriously, I am always impressed at how meticulous and well designed your stuff is @nervous_squirrel I’ll get there some day!
Hey, were you controlling pitch by changing the sample rates? Thats what i was looking at (when i wasnt being a lazy potato).
The idea was to translate midi control messages into serial control messages that map to different sample rates.
If there is a more simple way to do this, that would be great.
I’m also curious how you ended up with 24 outputs instead of 16.
